Giving a directory to output file in a launcher. for (rosbag record and rostopic echo)

Hi, I have been working by now in ROS by the command line and I have just started to work with launch files. Some nodes I want to run are rosbag (record) and rostopic (echo). I have been finding templates of launchers for these nodes, that i have found useful. But the problem is that in both nodes (rosbag record and rostopic echo) we create output files, and i havent found a way to specify the output file directory. Examples: 1)rosbag record launch: 2)rostopic echo launch Question: Is there any way for any of them (rosbag record or rostopic echo) that you know for specify the output file directory?? For example in rosbag play we can specify the input file directory with: in this example the input file directory is specified by "/home/user/Escritorio/main_bags/" and the filename by "2013-04-13-02-36-11.bag", I want to specify the directory too when I use output files not only when I use input. Could you please help me in any case rosbag record or rostopic echo (to a output file) if you know how to? Thank you very much, Pablo Payno Error when introducing tags: #launch #roslaunch #rosbag #rostopic #rosbag_record #rostopic_echo #output #directory #output_directory #specify_directory #rosbag_output #rostopic_output